Pill or tablet



provided with a coating UNITED STATES PATENT OFFICE.

PARKER J. NOYES, OF LANCASTER, NEW HAMPSHIRE.

PILL OR TABLET.

v a SPECIFICATION forming part of Letters Patent No. 536,155, dated March 19, 1895.

Application filed ay 5,1894. Serial No. 610,198. (No specimens.)

.To all whom it may concern:

Be it known that I, PARKER J. N earns, a citizen of the United States, residing at Lancaster, in the county of Coos and State of New Hampshire, have invented certain new and useful Improvements in Pills or Tablets; and. I do declare the following to be a full, clear, and exact description of the invention, such it appertains to make and use the same.

My invention relates toan improved form of soluble pill or tablet, and especially those material.

My object is to produce a pill, tablet or medicament with a coating or envelope which will be more rapidly and easily dissolved upon coming in contact with the juices of the stomach. To accomplish this purposeI incorporate with the sugar or other suitable material which comprises the coating or envelope, an efi ervescing compound or mixture consisting of a suitable carbonated alkali or its equivalent.

The preferred composition which I use for carrying out the foregoing purpose consists of the following elements: sodium bicarbonate, nine parts; citric acid, seven parts; cane as will enableothers skilled in theart to which n of sugar or similar ever, desirable that the ingredients employed should be mixed in a dry state and then put on the pill or tablet by compression or other suitable means.

It will be apparent from the foregoing description that a coating of this character is exceedingly susceptibleto moisture, and will be at once dissolved by the juices of the stomach upon swallowing, thereby permitting the medicament to act without delay.

What I claim as new, and desire to secure by Letters Patent, is-

1. A pill or tablet provided of effervescing material.

2. A pill or tablet having a non-elfervesciug body provided with an efiervesceut coating.

In. witness whereof I aflix my signature in presence of two witnesses.

- I PARKER J. NOYES.

Witnesses:

M. A. HASTINGS, H. D. F. HILLIARD.

with a coating 

